5-print_memorytest.c

#include <unistd.h>

void ft_print_hex(int x)
{
    char *base = "0123456789abcdef";

    write(1, &base[x / 16], 1);
    write(1, &base[x % 16], 1);
}


void ft_putchar(char c)
{
    if (c >= 32 && c <= 126)
        write(1, &c, 1);
    else
        write(1, ".", 1);
}


void print_memory(const void *addr, size_t size)
{
    size_t i = 0;
    size_t j;

    unsigned char const *p = addr;

    while (i < size)
    {
        j = 0;
        while (j < 16 && i + j < size)
        {
            ft_print_hex(*(p + i + j));
            if (j % 2)
                write(1, " ", 1);
            j++;
        }
        while (j < 16)
        {
            write (1, "  ", 2);
            if (j % 2)
                write(1, " ", 1);
            j++;
        }
        j = 0;
        while (j < 16 && i + j < size)
        {
            ft_putchar(*(p + i + j));
            j++;
        }
        write (1, "\n", 1);
        i += 16;
    }
}


#include <string.h>

int main(void)
{
    int tab[10] = {0, 23, 150, 255, 12, 16, 21, 42};

    print_memory(tab, sizeof(tab));
    return (0);
}